Automobile-tire.



A. B. HOLLENBEGK.

AUTOMOBILE TIRE.

APPLICATION FILED JUNE 8, 1910.

Patented Nov. 4,- 1913.

ALBERT B. HOLL ENBECK, OF SIDNEY, NEW YORK.

AUTOMOBILE-TIRE.

Specification of Letters Patent.

Patented Nov. 4, 1913.

Application filed June 8, 1910. Serial No, 565,827.

be so protected against puncture that it shall be suitable for heavy duty an durough usage without danger of destruction.

Aside from the use of my improved tire for pleasure-vehicles, I have 'in mind its being most excellently adapted to the requirements of commercial wagons.

My object is also to provide aconstruction which shall provide a long life to the tire and to incorporate the elasticity of the pneumatic tire withthe resistance of the cushion or solid rubber tire.

.My invention consists of an inner pneumatictire surrounded in a fabric and rubber case and seated in the groove of a fixed metal tire portion, and combined with an annular outer metallic tire portion internally grooved to receive and seat upon the case of. the pneumatic tire and having its periphery provided with a solid or other form of rubber shoe, the construction being such that the weight of the vehicle and its load rides yieldingly upon the pneumatic tire while the outer metallic and solid rubber portion takes the hard wear upon the road and protects the pneumatic tire against bein punctured.

ily invention also comprehends details of construction which, togeth r with the features above specified, will oe better understood by reference to the drawings, in which:

Figure 1 is a cross sectional perspective view of a wheel tire embodying my invention; and Fig. 2 is a sectional side elevation of the same.

2 is the wheel proper and may be made of wood, or of any of the constructions heretofore employed.

-3 is a fixed metallic tire portion secured upon the felly of the wheel 2 and formed with an annular groove 6 forming almost a semi-circle in cross section.

4 is an outer or movable metallic tire portion and is annular in shape and provided on its inner surface with a groove 6 similar to the groove in the part 3 so that these two grooved portions provide an allnular channel substantially circular in cross section in which is arranged the pneumatic tire 8 and its case 7. These metallic portions 3 and 4 have a sliding connection at 5 so that the outer portion 3 may adjust itself to the part 4 in the plane of the wheel to suit the load itmay be required to carry; and reversely, the part 4 may adjust itself upon the part 3 to compensate for sudden impact to which it may besubjected in passing over obstruct-ions or from collisions.

The inner tube 8 may be of any ordinary construction of pneumatic tire and provided with the "pneumatic valve 9, by which it may be inflated.

The casing 7, which incloses the pneumatic tire, is formed of layers of rubber and fabric so as to be very strong and durable and provide great resistance against abrasive 1n ury to the pneumatic tire. This case 7 15 an annular envelop and spht at the top on a diagonal so as to overlap at 7 and is, moreover, preferably provided with projections 17 in annular rows adjacent upon its surface of smaller diameter which are received in corresponding recesses 16 in the grooved portion of the metallic part 2 of the tire. In this manner the case 7 is held against creeping during the rotation of the wheel in use. Similarly, the outer peripheral portion of the case adjacent to the overlapping edges 7 a are provided with up wardly directed lugs 17, which engage recesses 18 in the inner face of the groove 6 of the outer movable metallic tire portion 4, but in this case the object is to prevent the tire portion 4 creeping upon the pneumatic tire and case. It will be understood thatwhile the lugs 17 coacting with the part 4 is desirable, they may be omitted.

The side flanges of the tire portion 4 are so shaped inside that they form annular side wheel is in use. This is important because without such provision the pneumatic action of the tire would be destroyed.

The outer perimeter of the movable tire portion 4 is providol with the rubber shoe portion 10, which has the annular dove-tail portion 11 at the bottom and which engages the part 4 so as to be retained thereby. The tire portion 4 is provided with annular inwardly directed'gripping flanges 12 which grip the dove-tailed portions of the rubber shoe and hold it in place. The part 4 may be provided about its perimeter between the ribs with a series of projections 19 which fit into recesses in the inner face of the rubber shoe to prevent the latter creeping.

enable the rubber shoe to be inserted, the

tire portion 4 may be made in two pieces, the part 13 being held in place by screws 14. It'will be understood that the rubber shoe portion 10 may be formed and attached in any other Way or may be omitted altogether and the outer perimeter of the part 4 used in its place for directly contacting with the ground.

In case the pneumatic tube 8 should become deflated from any cause, such as a leaky valve or from long usage and wearing out by lapse oftime, it becomes necessary to make the outer tire portion 4 rotate with the inner part 3, to enable the chaufi'eur to get back to the garage, or to a repair shop; and to insure this, I provide the tire portion 3 with teeth 21 upon each side and the portion 4 with teeth 20 upon the edge of each of its side portions, the said teeth acting as gears to engage'each other during the rotation of the wheel. In this operation the teeth 21 and tire portion 3 act as a gear with external teeth and the tire part 4 and its teeth 20 act as a gear with internal teeth and partakes of a planetary motion because the pitch diameter of the teeth 20 is materially greater than the pitch diameter of the teeth 21. These teeth should be rounded on their ends so as to go into meshed engagement at any position when brought together, the outer part 4 taking a slight rotary adjustment automatically, if so required, to insure the engagement. Ordiandhence, while flexible, is not expansible.

Its lapped joint 7 while normally kept closed by the shape of the wall of the annular chamber formed in the outer part 4, is more positively maintained in close position by reason of the projecting lugs 16 engaging the recesses 18.

I have shown my invention in the form I prefer for commercial use, but I do not restrict myself to the details as these may be modified without departing from the spirit of the invention.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is:

In a wheel tire, the combination of two metal annular portions loosely sleeved to gether in the plane of the wheel and forming an annular chamber between them of normally circular cross section and the outer annular portion having lateral annular grooved portions curved in cross section to form lateral annular spaces, a pneumatic tube arranged in the annular chamber,and a separate protecting flexible but non-stretchable case inclosing the pneumatic tube and interposed between it and the walls of the annular chamber and adapted to spread laterally into the lateral annular grooved spaces when the pneumatic tube is compressed radially, said grooved spaces snugly receiving and supporting the case when spread laterally.

In testimony of which invention, I hereunto set my hand.

ALBERT B. HOLLEN-BEGK.

Witnesses 2 WM. KEENER, B. T. TU'r'rLn.

copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

